Geomorphic Analysis of River Systems : An Approach to Reading the Landscape


Kirstie A. Fryirs
Bok Engelsk 2012 · Electronic books.
Annen tittel
Medvirkende
Utgitt
Hoboken : : Wiley, , 2012.
Omfang
1 online resource (364 p.)
Opplysninger
Description based upon print version of record.. - Title page; Copyright page; Contents; Preface; Acknowledgements; CHAPTER ONE: Geomorphic analysis of river systems: an approach to reading the landscape; Introduction; How is geomorphology useful?; Geomorphic analysis of river systems: our approach to reading the landscape; Key messages from this chapter; CHAPTER TWO: Key concepts in river geomorphology; Introduction; Spatial considerations in reading the landscape; Catchments as nested hierarchies: the spatial configuration of landscapes; Imposed and flux boundary conditions; Heterogeneity and homogeneity of landscapes. - Catchment area-discharge relationshipsRetrospective analysis of high flow stage; Flow frequency; Flow variability; Conclusion; Key messages from this chapter; CHAPTER FIVE: Impelling and resisting forces in river systems; Introduction; Impelling and resisting forces and Lane's balance of erosion and deposition in channels; Mechanics of fluid flow; Impelling forces in river channels; Total, specific and critical stream power; Mean boundary shear stress; Resisting forces in channels; Valley-scale resistance; Channel-scale resistance; Boundary resistance. - Catchment linkages and (dis)connectivityConceptualisation of time; Timeframes of river analysis; Davisian cycle of landscape erosion; Equilibrium notions in river systems; Differentiating behaviour from change; Disturbance events; Magnitude-frequency relationships in river systems; River sensitivity and resilience; Catchment-specific analysis of river systems: combining spatial and temporal concepts; Conclusion; Key messages from this chapter; CHAPTER THREE: Catchment-scale controls on river geomorphology; Introduction: what is a catchment?. - Fluid resistance (Reynolds and Froude numbers). - Key messages from this chapterCHAPTER FOUR: Catchment hydrology; Introduction: what is hydrology?; The hydrological cycle; Operation of the hydrological cycle; Runoff generation; Groundwater flows; Catchment-scale runoff and discharge generation models; Channel initiation; Gully and channel formation; Flow regimes of perennial, intermittent and ephemeral rivers; Discharge and the magnitude/frequency of flow in river systems; Flood stages and hydrographs; Analysis of hydrograph shape; Discharge measurement; Direct measurements in the field; Slope-area method; Stage-discharge relationships. - Process zones in catchments: sediment source, transfer and accumulation zonesLongitudinal profiles of rivers; Geomorphic transitions along river longitudinal profiles; Catchment morphometrics as controls on river character and behaviour; Catchment shape; Catchment relief; Drainage density and network extension; Drainage pattern; Geologic controls on drainage network form, and river character and behaviour; Lithologic controls upon sediment calibre and volume; Tributary-trunk stream relationships; Stream order; The influence of catchment configuration upon flow and sediment flux; Conclusion. - Filling a niche in the geomorphology teaching market, this introductory book is built around a 12 week course in fluvial geomorphology. 'Reading the landscape' entails making sense of what a riverscape looks like, how it works, how it has evolved over time, and how alterations to one part of a catchment may have secondary consequences elsewhere, over different timeframes. These place-based field analyses are framed within their topographic, climatic and environmental context. Issues and principles presented in the first part of this book provide foundational understandings tha
Emner
Sjanger
Dewey
ISBN
9781405192743. - 9781405192750

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